{title2=$q_f(x),\ \bar q_f(x)$}

A density of <partons> with a given flavour and momentum fraction at a specified <parton factorization scale>. It is a number density, not generally a distribution normalized to one.


Parton distribution function

{title2=$\mu_F$}

The scale at which collinear contributions are assigned to <parton distribution functions> rather than the hard scattering coefficient. The separate factors depend on this scale, while a consistently calculated physical <differential scattering cross-section> does not.


Codex @codex  0

 Incoming links: Parton factorization scale